Sewing-machine.



PATENTBD JAN. 28, 1908.

H. A. KLEMM. SEWING MACHINE. `APPLIGMION FILED 1320.30, 1904.

7 SHEETS-SHEET 2.

l//T/VESSES.'

No. 877,508. w PATENTED JAN. 28, 1908.

H. A. KLEMM. SEWING MACHINE. APPLICATION FILED Dno.so,19o4;

7 SHEETS-SHEET 3.

gli; l LIF.. c '.f.

PATENTED JANI 2S, '1998.

H. A'. KLBMM. SEWING MACHINE. APPLICATION FILlflD DEO. 30,1904.

-v SHEETS-ausm' 4.

No. swgos. PATENTBD JAN. 28, 1908.

H. A. Mmm. SEWING MACHINEr APPLICATION FILED DEO.30,1904.

7 SHEETS-SHEET 7.

ATTORNEY vshaft lapped loyers ere readily introduced into riizieliiiie by tlief. peretor, end the interlock of theirlibers inside ood adjacent the lino ol seem produces e. strong tendeiiey against diserrangeiiient of the edges in the 'feeding und stitehlng operations to which they are liable the operation oi the prior eoiistroclion referred. to involving the eiiployiiieut oi e continuous supporting zioeiiibei" iii 'conjunction with the two stitching zieclisiiisiiis by :vliich the body of 'the fabric inside the line of seem is necessarily opened out for its initial introduetion into the machine.

Thej oiniiig seem elements are placed in eid-- vence of the covering seem elements and so ier es their seeming properties ere concerned may comprise :my approved torio of suoli elements as may be adapted for use in con section with the covering seem elements, but what l have chosen iii this exemple for illes" tration may consist oi e pair of feeding; disks e mounted on vertical bearing bosses eer-- Pied by the liraclietpi eces fv depei'idiiig from the heed of the brselizet-.eriii 'for feeding the two pieces of Work c to be sei/ved pleced upright edffewise between the cose-tino; feces of seid dislls, e horizontally or prsetieelly horizontally operating needle d, e looping; hook e, and loop spreader of usuel construction end operation which need not be ertieulerly described so for es their stitch '.orrning o era-tions are concerned, 'it being understoo( that they ineke the ordinary needle end looper thread ehein stiteh.

'The feed disks :ire operated by a pewi mechanism Whereoi the pendent llsnge g oli one of the i eed disks iso part operated by the connecting; rod lz and the creol: i ol the roe-iii end the other of the feed disks is operated by the frictionel Contact with it oi" the one iiiupelled by the ratchet device.

The ratchet device comprises the bowl g liorizoetelly rocking on the vertieel iii/Lis if and having the internal eceentrie 'feces (/3 fronting the inner .ieee gt ol the vertical flange g, between which feces g3 ind if bell reces are formed for clutch balls g1 which with con trolling s )rings 37 behind them cause the bells to bite said. inner ileujge g4 and turn the feed disk when leed bei Y1. Shifts forward, und the stationery eccentric foce y? m eliiiig with seid flange y* enel-her bell rm iii which is e bell g8, and zi controlling spring f/ lowing reverse setion relatively 'to the other described bell 'raices and bells to gris and hold the leed disi( when the leedber reverses eed prevent reverse action oi' the ieee disk, bul' this is not u new pewl ijiiehsiiisan ei'id only detailed here for clearer understanding of the moons' el operating the l'eed disks.

The needle dis cerried on the lower horizontally end lc'irxmrdly projecting erm ol s mainly vertically.ranging bei Z which is et.

its upper end m piv'otod 'on s standard e supported on the liezid lil ol' the smtioriery erm T20, directly' over the seam line, end intermodistely of its extremities is clamped lo the fromvv ond el e horizoui'el arm o mounted leteriilly :ind upwardly slidable in e guide-Way u :ind con riected by the eccentric rod 'q with the eccentric r on the l'iorizi'iiitzil shaft s. in the opper bert ol vihe stationary overheugirig brseliei-m'm tof the frame midgeared by bevel wheels 15, upright shaft u and bevel wheel c with the mein shaft i for irriparting the recipimze-tirig movements to the seid. noodle d; i is :i guide bracket slotted :it the lower end for guiding bar The looping liooli e meeting-r with seid needle d is carried crank 5 having.; a supporting pivot :it 6 and connected by its other arm amd vthe rod 7 to the wrist piu 8 of e disk Q geared by the bevel Wheels l() with the slielits.

The loo p spreiiderfis arranged as overtiesl piece lie/ieg the operative point on its lower end and carried by the llorizoiitslsrm 1l, of the'yertically reeiprocntinw rod 12 su )ported in braekets l2 and coupled by the eiimip i3 end link lil with the crank 'l5 of the rocle shalt lo mounted in bearings l?, one oi vif'hich is supported on the bracket bolted on the hub 23 ofi-he rear side of the Istationary erin suppoitii'ig; steudard 24; the other bearing l? being` on one sidcoi head The rock shaft I6 cou pled by another emula 25 aud eccentric red 25 with en eccentric ou the 11min shaft y', 'for operating il.

'lfhe foregoing described devices constitute the seeming mechanism by which the oiriii'ig oi" the pieces effected iii advance oi the iiisliii'ig; of the covering seam directly following the oiiiing, the apparatus ol" which will now be described, but 1t is to be understood that .l -oo iiot limit myself to overedge'seam--v ing; ii'ieelemism lor joining the pieces.

From the feeding disks (L ol the joining A meehenisiii the seemed fabrics c poss on to the 'iront eind ol the cylindrical Work plete or work-simporting horn 28 and are thereby di vided below the stitches shown in Fig. 5% and have the lap 3 6 pressed down by the 'presser ioot 37 so as to be sewed each side olE the line lof the ioirliz'ig-seam for making a llal. seam,l

two vertiesliyl reciprocating needles 29, and two single thread elisiii stitch forming hooks 3() being used, the needles being attached to s single needle bei 3l located above the work plete soos toieeiyiroeiite in bearings 32, und t ie hooks being located under the Ywork plete on a rocking shalt 57 arranged trans yeisely of the seam line, end said hooks being arranged *for eoeotion with the needles respectively end m the usuel marmer of such ermee the Work and covering the joining seam as shown in Figs. ll and l2 by double zig-Zag threads. A'fee'd dog Believing the usual four motion action, is employed for feeding.

the Work to these needles 2Q and passing it along from the needles as usual.. rlhis feed dog is attached to the forward extremity `of a bar 39 located within the-cylinder 2S and reaching along backward through it and connected by sleeve with a forli 40 ein bracing the eccentric cani 4l on the main shaftjj to give. the up and down movements to the feed dog, said bar being pivoted at 42 to an intermediate standard 43 on which it vibrates for suoli Vertical motion of the feed dog.

For theforward and backward motion of the feed dog, the standard 4 3 is pivoted ai' 44 and the sleeve 45 has a rod 46 engaging slots 47 in the upper portions ot rocking stain'la, 4S carried on a rock shaft 49 on which is an arm 50 in the upper portion of whieh'is a slot 51 wherein a pin ol' a connecting rod 525 engages to rock shaft 49 by the action of an eccentric 54 on the main shaft j with which rod 53 is connected, thus imparting the said rm'iprocating movements to the feed bar 39 and dog The pin 52 connects with arm 5() by the slot 51A as a means of adjustment. for varying the lengths of the stitches.

.lntermedintel),Y of the standard -lt and the end of the feed bar 3Q carrying the feed dog liti, said har is roupled hf.' a pair of toggle jointed links one of which has a pivot fifi 'lixedliY 'mounted in the cylinder 28, which are. so arranged relatively to said har that they give more positive operation to the feed dog in its up and down movements.

.For the rocking' nnn'cinenis oll the looping hooks 3l) the\v are carried on a short rock od (35 oniunted in heur-- rniuler or horn and exi renters .3S and haring a roch lever fl() pn'- nd coupled ij.' a lint; lli

tending backward if: engagement by a sind o5 with cani slot ffii) in a disk o7 Carried on the main shaft j.

The needle har Il is operated vertically h v the cranli pin on rari" xd bur the dish (il.) on the shaft Q, connecting rod Til, perforated hlooli 7l rarried b i' said connecting rod and the lixed collins; T2 on the needle hai' and heln'een which the said perl'mated block works.

'l`hc rotatorjf motion of the needle bar 3l is ell'ected h) the pinion 72 spline keyed on said bar as best shown in lfig. 5, and the reciprrmating toothed rack 7.3 geared with said pinion and carried on the reciprocating rod T4 coupled with the rock lever 75 having a l'ulorurn pivot 76 and carrying a stud 77 workn ing in the earn groove 78 of a disk 7 9 geared by bevel Wheels 8O with the shaft s, said Wheels being in the proportions of one to two because the needle bar must. make only half a turn while Ina-king a full cycle up and down.

The presser foot 3T carried on the usual 'presser bar Si and has the usual eam'lover lifter ln the under face of the presser foot is a groove 83 for the joining seam, said groove, preferably, being prominent at the front but shallowing backward and vanishing in the flat surface as shown in lf ig. l for ultimatchY flattening they seam more elfeetually.

lt will he seen that an especial advantage of the independent feed mechanisms for each set of stitch forming` elements the facility it affords of adjusting them with relation to each other for compensating action in the war of regulating the feeds one to the other for giving either faster or slower feed by either' one as the, nature of the goods ning.'v require for making smooth and even seams, either by crowding the feed of one. against the other in ease slight overfeed of the. first acting feed is necessary or retarding it.

By reference to the drawings, and more partiouiarljv to lfig. 4, it will be observed that the l'iraeket-pieces ff( constitute Work-supporting portions` of the bracket-,arm to which they are attached, and allord a clear and unobstructed vertical work-receiving space in front of the central portion of the work-supporting horn 'Z8 through which the work, hanging from the feed rolls (1 carried thereby7 passes to and over the work-supporting horn in the stitching operation. BLV the construction of the. machine frame in this form, the overlapped pim-'es of fabric are adapted to hang from the iced rolls throughout their marginal and hodj; portions in face-to-face contact relation which is undisturbed by passage through the machine until the uniting stitches have bei-i. applied so as to insure against their relative iougitudinal or lateral displacement while undergoing the stitching operation.

l do not limit misch" te inomechanisms 'Y'iezag Cross seamhing seam for it ei'ident that i cross seaining means may he einploj. ed, but l consider the zigzag stitches tht` best because there is more uniforn. distribution ol' the crossing threads.

What l claim as my invention l. In a. sewing machine, the combination with the framel .:oinprising a Work-supporting horn7 an o\"erhanging braoket-arm and a Worlesnppoi'ting member in advance of said wurk-supporting horn having an unobstrnct-- ed. vertical norka'eeeiving opening in line with the oentral portion and throughout the. depth of said work-supporting horn,V of Workadvancing mechanism carried by said Worksupporting member and adapted for the suspension 4and propulsion of the work through said' opening toward said horn, feed- I senses ing mechanism carried by said born and adapted to propel the Work upon end longitudinally of sind horn, and two sets of stitchformingg mechanism acting in conjunction the ove I pcd marmns of .layers of fabric, of means .oz suppe ig sind advancing to seid uniting stitch-for.. Aiing mechanism said layers of fabric With both the margins and. body portions of the latter in face-to-face contact relation,` and includingr initially acting opposed propelling` me ans moving-v in unison and engaging the opposite faces of the Work so disposed edjacentthe initial stitching line, and means intermediate the stitch-forming and Worliadvancing mechanisms for turning outwardly upon opposite sides of and above the line of stitching; the marginal portions of the fabric so es to overlap the adjacent body portions thereof.

3. in severing1 machine, the combination with independent stitch-forming mechanisms, comprising reciprocating thread-carrying needles having working positions in rela- I tive angular disposition and adapted respectively for uniting and covering the overlapped margins of layers of fabric, of means engaging and traveling with both faces of those 'portions of the fabric adjacent and at one side of thestitch-line and adapted to sumiort .and advanoeto said uniting stitcliforming meclilenisni said layers of fabric face to face with the in argine including the stitchline Wholly exposedA for passage of the needle,

and means acting upon tbe opposite faces of the fabric intermediate the stitch-forming and n erh-advancing mechanisms for opening out the marfrins and body of the fabric adjacent the uniting seem preporatoryT to the action of tbe covering stitch-forming mechanism.

Ll. ln a sewing machine, the combination with two spaced feedine' devices, having Work-engaging faces-dn re a ive angular disposition and s. common direction of feed, and independent operating means' for seid feeding" devices, with means 'for adjusting their relative feeding action, of'independent stitchforming mechanisms comprising reciprocating:t thread-carryingneedles havin g angularly disposed Working positions end, adepted for producing seams of different character, the

, one overlying the other and srranged'to operate each in conjunction `with a different one of said feedmo devices.

in a sewing machine, the cfor'nbination with 'a frame comprising a work-suy porting member and en overhanging brac *et-arm, and independent 4stitch-forming "mechanisms mounted in said frame and adapted respectively for uniting and covering the overlapped margins of layers of fabric, of two spaced feeding'devices arranged in alinement and having a common direction of feed and each being adapted to cooperate with one of said stitch-forming mechanisms, the forward;

operating inde endently -in supporting` and feeding,r the fa ric in conjunctlon with thc respective stitch-forming mechanlsms and affording en intermediate clearance'spnce for introduction of the fabric between the same in yorder to permit the use of the niachine for e. single stitching operation when desired.

7. in a sewing machine,"the combination with suitable feeding mechanism, of independent stitch-forming mechanisms adapted respectively for uniting," and covering the overlapped margins offlayers of f abric, the

covering stitch-forming "mechanism com-- prising two reciprocating. andlaterally moving needles and two loop-t'akers'having fixed Working .positions and each coopera-ting with a different needle in the' production of successive stitches.

8. In a sewing mechine, the combination with suitable feeding mechanism, ofindependent stitch-fornnng mechanisms adapted leo respectively for uniting and covering the.

overlapped margins of layers of fabric, the covering stitch-forming mechanism comprising two reci roccting and laterali moving needles Wit actuating means t erefor causing them to exchange Working sitions in the roduction of successive stitc es, and loop-ta 'ters disposed in fixed Working positions and adapted to cooperate lternatelywith each. of said needles 1n the production of stitches. I

9. 1n a sewing machine,l the combination with. suitable feeding mechanism, of independent stitch-forming mechanisms adapted yresp'ectively for unimi? and covering the overlapped margins of ayers of fabric, the

covering stitch-forming mechanism comprising two reci rocating and laterali 'moving needles Wlt actuating means 4 t ierefor causing them to exchange Workingpositions inthe roduction'of successive stitches, and

loop-ta ers disposed 'in fixed Working-positions and having operative movements in the direction of feed and adapted to cooperate 'alternately with each of said needles 1n the production of stitches. i 1l l O. In esewing mach1ne, the combination with s frame comprising a'iyork-supporting etlarm..

member and an overhangingjbrtic and a longitudinali r disposed main-shaft journaled in said bracket-arm, 'of-stitchforniing mechanisms adapted for uniting and covering the overlapped margins of layers of fabric and comprising thread -carrying I needles having Working positions in relative angular arrangement, carriers for said needles sup orted by and movable in respect of sai( bracket arm, and coperating looptaking members carried by said bracketarml and Work-supporting member, respectively, independent actuating means for said needles connected with' the forward end of said main-shaft, and advancing the Work for the successive action of said stitch-forming mechanismsu 1l. In a sewing machine, the combination with two stitch-forming Vmechanisms `cornprisingreciprocating needles moving respectively in horizontal and vertical planes, and compleinental loop-taking devices coperating with the same, cf a disposed feed-Wheels for supporting-and presentng the fabric to the first-named stitchforniing mechanism in vertical arrangement,

feeding surface actinCy feeding mechanism for pair of horizontally' and a reciprocating feed-dog With horizontal i in conjunction vwit the second-named stitch-forming mechanism upon the fabric presented to the latter in horizontal arrangement.

l2. in a sewing machine, the combination with the frame comprisinga Work-su porting member and anv overhanging bracli'et-arrn, and independent stitch-forming mechanisms adapted respectively for. uniting and covering the overlapped .edges of two pieces of fabric, of independent eedin devices adapted to operatively engage tv e fabric each adjacent to its respective stitch-formi' mechanism, `and means for carrying sa. feeding devices connected respectively with said work-supporting member and bracketarm.

Signed at New York this. 29th day of December i904.

HERMANN A. KLEMM.

Witnesses:

C. SEDeWIcK, J. M. HOWARD. 

